If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You will be required to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.

Comment

Geezz those look aggressive for a hole saw.That deep gullet and the wide teeth in many things I bet they cut fast.With so few teeth and that gullet it could be a knuckle buster.Even so i might have to try 1 out.Looks like it'd very to resharpen too.
Sam

Knowing the number of holes I've drilled as new construction plumber all those years,

me thinks that's a great idea till you hit a nail and throws you across the room.

I would say if you're braced off well enough, you'll grab that nail and bend the bit. Probably will be able to hammer it back into place but usually the top where it is threaded into the arbor bends and gives a terrible wobble to the bit from that point on.

I like the paddle bit idea for the center bit.....just curious though if it encounters a knot, will it slowly walk that bit a little off center or not.

Anything has to be better than what we used back in the day; dull self-feeders that you had to put brute force against to go through because boss man wouldn't spend money on new bits or sharpen the old ones. He'd always state that there was no point in paying for correct sharpening when the next hole *nail* is going to wipe it out anyway.

Comment

Here is what I think is a better picture of one with the arbor. I wonder if those are carbide tips. I saw that they have a diamond grit sharpening file. If it was just regular carbon or high speed steel a good quality regular file or small aluminum oxide stone would work.

3 teeth and what looks like a flat spade bit for the pilot drill. Hmmmm - I don't want to use one of these other than with a well braced big spade handle drill or a HoleHawg.

Comment

I know the person who came up with the One Tooth hole saw design, he was a plumber that lives in Ohio, He is a whiz at mill work and he tried making many versions of the hole saw, One with 2 teeth, One with 3 teeth but in the end the one tooth worked the best. When you have the 3 teeth bitting at one time you better be able to hold that drill against something or else it will probably get the best of you.
________Honda R engine

I've been very impressed with the Lenox bit. You do need a heavy duty high speed drill like the Super Hawg. Cuts through 100 year old nail embedded timber like butter. Easy to sharpen. It will cut through 50 nails before needing sharpening but don't use it on plaster or plastic. Core pops right out.